Zero setting roller counting mechanism

ABSTRACT

The mechanism includes a counter frame and a plurality of toothed counting wheels rotatably mounted on a common shaft and each having a respective heart-shape resetting cam fixed thereto. To reset the counting mechanism to zero, the cams are actuable by respective zero setting fingers of a zero setting rake operable, against spring bias, by a resetting slide shiftable in the counter frame transversely of the counting wheel shaft. A plurality of counting wheel stepping pinions are mounted on a common shaft which is displaceable radially of the counting wheels. During zero setting of the counting wheels, the pinions are disengaged therefrom and are maintained in their respective angular orientations by fixed elastic tongues. The resetting slide includes a plate having a width substantially equal to the axial length of the counting wheel set, and the zero setting fingers are arranged in fixed positions on this plate. The plate has wall portions extending from its opposite longitudinal edges and mounting the common shaft of the pinions in parallel with the common shaft for the counting wheels. The common pinion shaft is mounted in elongated slots so as to be shiftable relative to the slide against frictional resistance produced by spring pressure. Releasable detent means are provided to latch the slide in a position in which the pinions are engaged with the respective counting wheels.

United States Patent [1 1 Kundisch et al.

[ Dec. 11, 1973 ZERO SETTING ROLLER COUNTING MECHANISM [75] Inventors:Heinrich R. Kundisch; Werner K.

Pfundstein, both of Schwenningen/N, Germany [73] Assignee: Irion &Vosseler, Schwenningen/N.,

Germany 22 Filed: Feb. 23, 1973 21 Appl.No.:335,137

[30] Foreign Application Priority Data Mar. 17, 1972 Germany P 22 12882.1

52 US. Cl. 235/144 no [51] Int. Cl G06c 15/42 [58] Field of Search235/144 HC, 144 M, 235/144 SS, 144 SM, 144 R [56] References CitedUNITED STATES PATENTS 3,529,769 9/1970 Howard 235/144 HC 974,006 10/1910Werle 235/144 HC FOREIGN PATENTS OR APPLICATIONS 576,122 4/1958 Italy235/144 I-IC Primary Examiner-Richard B. Wilkinson AssistantExaminer-Patrick Salce Att0rney.lohn .l. McGlew et a1.

[57] ABSTRACT The mechanism includes a counter frame and a plurality oftoothed counting wheels rotatably mounted on a common shaft and eachhaving a respective heartshape resetting cam fixed thereto. To reset thecounting mechanism to zero, the cams are actuable by respective zerosetting fingers of a zero setting rake operable, against spring bias, bya resetting slide shiftable in the counter frame transversely of thecounting wheel shaft. A plurality of counting wheel stepping pinions aremounted on a common shaft which is displaceable radially of the countingwheels. During zero setting of the counting wheels, the pinions aredisengaged therefrom and are maintained in their respective angularorientations by fixed elastic tongues. The resetting slide includes aplate having a width substantially equal to the axial length of thecounting wheel set, and the zero setting fingers are arranged in fixedpositions on this plate. The plate has wall portions extending from itsopposite longitudinal edges and mounting the common shaft of the pinionsin parallel with the common shaft for the counting wheels. The commonpinion shaft is mounted in elongated slots so as to be shiftablerelative to the slide against frictional resistance produced by springpressure. Releasable detent means are provided to latch the slide in aposition in which the pinions are engaged with the respective countingwheels.

10 Claims, 5 Drawing Figures FIELD AND BACKGROUND OF THE INVENTION Thisinvention relates to a zero setting roller counting mechanism includingheart-shape resetting cams each connected to a respective counting wheeland which, for resetting, are actuated by zero setting fingers on a zerosetting rake operable, against spring bias, by a resetting slide whichcan be shifted within a counter frame transversely to the common axis ofthe counting wheels. The counting mechanism further includes steppingpinions mounted on a common shaft displaceable radially relative to thecounting wheels and which pinions, during zero setting of the countingwheels, are disengaged therefrom and maintained in their respectiveangular orientations by means of fixed elastic tongues.

Zero setting roller counting mechanisms of this type are known. Forexample, German provisionally published application No. 2,136,712discloses a zero setting roller counting mechanism in which theresetting slide consists ofa plate which is mounted in the counter framebelow the counting wheels so as to be shiftable, and which, in its restposition, projects from the front side of the counter frame and may bepushed manually into the counter frame through a certain distance. Thestepping pinions are freely rotatable on a shaft which is mounted so asto be displaceable in slots provided in the side walls of the counterframe, and these slots extend radially relative to the stepping pinons.The displacement of the shaft in the slots of the side walls of theframe is effected by lateral sliding guides provided for the resettingplate, which has guiding surfaces which are oblique to its direction ofdisplacement.

In the arrangement of German provisionally published application No.2,136,712, the zero setting fingers which, during resetting, act uponthe heart shape cams of the counting wheels, are secured, with thecorresponding axial spacing, to a bow which is parallel to the commonaxis of the counting wheels and pivotally mounted on the common shaft ofthe pinions. This bow is provided with a forked claw in which anoperating cam of the resetting plate engages in order to effect apivotal movement of the zero setting-fingers during the resettingmovement of the plate. The elastic tongues, serving to maintain thestepping pinions against rotation during the zero setting operation, arealso arranged on the bow having the resetting fingers, so that thestepping pinions, owing to their radial displacement with respect to thecounting wheels, come into contact with the elastic tongues as soon asthey are disengaged from the teeth of the respective counting wheels.The zero setting fingers, the elastic tongues, the bow, and the forkedclaws are made of synthetic material and in one piece, and so is theresetting plate with its slide guides and the operating cam.

There are other known roller counting mechanisms in which the resettingpart comprises a slider mounted in a side wall of the counter frame andactuating, on the one hand, by means of a cam, a resetting rake and, onthe other hand, a bridge for shifting the pinion shaft in the respectiveseating slots therefor. The elastic tongues, for maintaining thestepping pinions against rotation, are secured to a web of the counterframe.

As such roller counting mechanisms are manufactured, and also needed, inlarge quantities, the important requirement to be met, aside from thebasic demand for relaibility in service, is to reduce the manufacturingcosts as much as possible. It is for this reason that, for some time,many parts of roller counting mechanisms have been made of syntheticmaterials, by injection molding, and the number of component parts hasbeen reduced to a minimum. However, and in spite of these steps, inknown counting mechanisms, the desired cost reduction has not beencapable of being obtained because of the still too high labor costs forassembly.

SUMMARY OF THE INVENTION This invention is directed to the problem ofproviding a zero setting roller counting mechanism of the type mentionedabove and which, while meeting all requirements as to its reliability inoperation, can be manufactured at a substantially less expensive thanknown roller counting mechanisms.

In accordance with the present invention, this problem is solved byproviding a resetting slide in the form of a plate extending throughoutthe axial distance of the counting wheels set, and zero setting fingersare arranged in a fixed position on this plate. Both longitudinal edgesof the plate have wall portions in which the shaft of the steppingpinions is mounted parallel to the shaft rotatably supporting thecounting wheels.

By such an arrangement, the time necessary to assemble the countingmechanisms is substantially reduced because the stepping pinions may bemounted on their shaft, and the shaft may be placed in its seats,outside the counter frame. Additionally, the zero setting fingers, asthey are an integral part of the resetting slide, need not be mountedseparately and are introduced into the frame along with the resettingslide. Even if it were necessary to manufacture the zero settingfingers, in a known manner, in the form of a separate comb-shape part tobe secured to the plate or resetting slide, for example, by means ofscrews or rivets, the assembly time would still be considerably morefavorable than with known counting mechanisms. However, it is moreexpedient to make the slide in one piece with the lateral wall portionsand the zero setting fingers, and preferably of synthetic material,because, when this is done, the time for securing the fingers to theslide is saved and the whole assembly operation consists merely inloosely inserting the resetting slide into the counter frame andmounting the shaft for the counting wheels in the frame.

An important feature of the invention is that the pinion shaft ismounted in slots in the wall portions, so as to be shiftable, againstthe friction produced by a spring pressure, with the resulting advantagethat, as compared to the distance covered by the resetting slide havingthe zero setting fingers, the stepping pinions are shifted through adistance which is shorter, by the length of the slots receiving thepinion shaft, and that, in each case, the stepping pinions are movedimmediately when the resetting slide starts to move. Consequently, thestepping pinions are positively disengaged from the teeth of thecounting wheels before the zero setting fingers engage the heart-shaperesetting cams of the counting wheels. At the return of the resettingslide into its rest position, the stepping pinions are reengaged withthe respective counting wheels before the zero setting fingers disengagefrom the heart-shape resetting cams.

Taking into consideration the requirement forboth saving as much spaceas possible and providing a most simple assembly operation, it isadvantageous to produce the friction forces by providing, on the wallportions of the resetting slide, bar springs, leaf springs, or similarsprings which press the pinion shaft against a longitudinal surface ofthe respective slot.

An object of the invention is to provide an improved zero setting rollercounting mechanism.

Another object of the invention is to provide such a zero setting rollercounting mechanism in which the assembly expense is very substantiallyreduced.

A further object of the invention is to provide such a zero settingroller counting mechanism which operates reliably in practice.

Another object of the invention is to provide such a zero setting rollercounting mechanism in which the resetting slide is integral with thezero setting fingers and supports a shaft mounting the stepping pinionswhereby the resulting unitary assembly may be readily inserted into acounter frame.

For an understanding of the principles of the invention, reference ismade to the following description of a typical embodiment thereof asillustrated in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS In the Drawings:

FIG. 1 is an isometric view of a resetting slide of a roller countingmechanism in accordance with the invention;

FIG. 2 is a partial front elevation view, partly in section, of theroller counting mechanism embodying the invention;

FIG. 3 is a sectional view taken along the line IIIIII of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3; and

FIG. 5 is a sectional view taken along the line V\/ of FIG. 3.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to the drawings, aroller counting mechanism embodying the invention comprises a counterframe structure 1 which is an integral piece of synethetic material andincludes a bottom wall 2 as well as side walls 3 and 4 which areconnected to each other, on the front side 5 of the counting mechanism,by an upper bar 6. Counter frame 1 is open both at its front side 5 andat its top 7.

In the rear part of counter frame 1, which has not been shown in thedrawings, an electromagnet is located and serves, in a known manner, todrive the counter by pulse sequences. The armature of this electromagnetactuates a shifting fork, which has not been shown, which engages a starwheel of the first counting decade. These parts have not been shown inthe drawings as they are common to zero setting roller countingmechanisms of the type to which the present invention is directed.

The roller counting mechanism includes counting wheels 9 each havingaffixed thereto a respective heartshape resetting cam 8, wheels 9, withtheir cams 8, being freely rotatably on a common counting wheel shaft 10mounted in axially aligned bores 11 and 12 provided in the respectiveside walls 3 and 4. For reasons which will be explained hereinafter, theinner surfaces of side walls 3 and 4 are provided with respectiverecesses 13 and 14, each having a vertical front edge 15 and an obliquerear edge 16, both edges being tangential to the respective bore 11 and12. On each side of the set of counting wheels 9, and between the endcounting wheels and the respective side walls 3 and 4 of frame 1, shaft10 supports spacer sleeves l7 and 18.

A resetting slide 19 is supported on the bottom 2 of frame 1 betweenside walls 3 and 4, and is mounted so as to be shiftable along sidewalls 3 and 4 against the bias of a spring. As best seen in FIG. 1,resetting slide 19 includes a plate 20 having, on its front side 21, aprojection 22 and a row of vertically extending laterally spaced zerosetting fingers 23 which are spaced laterally uniformly along front side2l. Plate 20 further includes lateral wall portions 24 and 25, eachextending along a respective side edge of plate 20, and each beingformed with respective horizontal slots 26 and 27 as well as withrespective horizontal upper guide edges 28 and 29.

Slots 26 and 27 receive shaft 30 of the stepping pinions, and shaft 30extends, on both sides, outwardly of the outer surfaces of the wallportions 24 and 25. At least one end of shaft 30 is flattened, andpreferably both ends, to prevent rotation of shaft 30. On the outersufraces of wall portions 24 and 25, bar springs 32 are secured at oneend to pins 31, with their opposite ends being bent in the shape of ahairpin whose upper arm 34 engages against the respective end of shaft30 thereby to press the flattened end of shaft 30 against the upperedges 35 and 36, respectively, of slots 26 and 27. The lower arm of thehairpin rests against a projection 37. With this arrangement, africtional coupling is established between shaft 30, for the steppingpinions. and resetting slide 19. The flattened end or ends of shaft 30provide a greater resistance to rotation of the shaft as compared tomere frictional resistance against the edges of slots 26 and 27.

As best seen in FIG. 3, the opposite ends of shaft 30 extend into guiderecesses 38 and 39 formed on the inner surfaces of the respective sidewalls 3 and 4. The bottom surfaces 40 and 41 of the respective recesses38 and 39 serve to limit the axial movement of shafts 30, while therespective vertical front edges 42 and 43 thereof serve as a stop forshaft 30, thus preventing the loose stepping pinions 44, mounted onshaft 30, from being drawn, owing to the spring bias to which resettingslide 19 is subjected, too far into engagement with the counting wheels9.

Vertically extending elastic tongues 45 are provided at a certaindistance from shaft 10 for the counting wheels, and are arranged in arow parallel to the axis of shaft 10 or to the axis of bores 11 and 12of the respective side walls 3 and 4. Tongues 45 serve to maintain thestepping pinions 44 against rotation when the same are disengaged fromcounting wheels 9. These tongues 45 are made of synthetic material andare integral with counter frame 1, so that no subsequent mounting orsecuring of the tongues is necessary. The cross-sections of tongues 45are of such dimensions that the tongues are sufficiently rigid andsufficiently elastic to be able to engage stepping pinions to preventrotation of the pinions during the zero setting operation. This isimportant in order to return stepping pinions 44 again into operativeengagement with the respective counting wheels 9 in the same relativeangular orientation, as soon as the zero setting has been terminated.Adjacent both edges of the projecting part 22 of the plate of slide 19,two approximately semicircular grooves 46 and 47 are formed in thebottom surface of plate 20, and these grooves extend parallel to thelateral walls. Below each of the grooves, elongated openings 48 areprovied in the bottom two of counter frame 1, and these openings serveto receive return springs 49 of resetting slide 19. As best seen in FIG.4, springs 49 engage, at one end, hooks 50 provided on bottom 2 of frame1 and, at the other end, hooks 51 provided on plate 20, the hooks 51extending into the openings 48 of bottom 2 of frame 1.

Approximately at the center of plate 20, a stop notch 52 is formed inthe bottom surface thereof, and a latch 53 of a stop spring is engagedin this notch when resetting slide 19 is in its rest positionillustrated in FIG. 5. The stop spring 54 and latch 53 are formedintegrally with the bottom 2 of counter frame 1, and are surrounded by aU-shape opening 55 as shown in dotted lines in FIG. 3.

The successive operations in assembling the roller counting mechanism ofthe invention will now be described. As a first step, the necessarynumber of stepping pinions 44 and spacer sleeves 56 and 57 are mountedon shaft 30 which is then introduced into slots 26 and 27 of resettingslide 19. Bar springs 32 may be mounted either before or after theintroduction of shaft 30 into slots 26 and 27. Following this, thepreassembled resetting slide 19 is inserted into counter frame 1 fromabove, so that its projection 22 extends from the front side 5 of thecounter frame and plate 20 rests loosely on bottom 2 of frame 1. At thesame time, the opposite protruding ends of shaft 30 are received in therecesses 38 and 39 provided in the respective side walls 3 and 4 ofcounter frame 1, so that springs 49, which have previously been securedto hooks 50 of frame 1, can be immediately secured to hooks 51 of plate20. It then remains to bring the counting wheels into their respectivepositions, and this is effected in a manner which will now be explained.

Because counting wheels 9, after the digits have been applied on thecylindrical peripheries thereof, must, in any case, be checked visually,an auxiliary shaft is used for this purpose and the counting wheels, inthe necessary number and succession, are mounted on this shaft. Thelength of the auxiliary shaft is such as to just fit in the spaceprovided by the two recesses 13 and 14 formed in the respective sidewalls 3 and 4 of counter frame 1. Together with counting wheels 9 and,perhaps, a blank roller, the two spacer sleeves 1'7 and 18 are alsomounted on the auxiliary shaft before the final mounting of the wholeset. Then the auxiliary shaft is introduced into the recesses 13 and 14from above so that, by virtue of the guide edges 15 and 16 of therecesses 13 and 14, which are tangential to the respective bearing bores11 and 12, the auxiliary shaft is automatically axially aligned withbores 11 and 12. Thereafter, the auxiliary shaft is replaced by the truecounting wheel shaft 10, whose length corresponds to the distancebetween the outer surfaces of side walls 3 and 4. This is effected bypushing shaft 10, from the outside, through one of the bores 11 and 12,which displaces the auxiliary shaft out through the other bore.

Thus, it is no longer necessary to mount counting wheels 9 and steppingpinions 44 individually on their respective shafts in counter frame 1.The entire assembly of the counting mechanism requires less manipulationand thus a very considerably reduced work time. Furthermore, a perfectfunctioning of the assembled mechanism is assured.

While lateral guidance of resetting slide 19 in frame 1 is assured byside walls 3 and 4, slide 19 is guided, in the vertical direction, onthe one hand by bottom 2 of frame 1 and, on the other hand, by thehorizontal guide edges 28 and 29 which slide on spacer sleeves 17 and 18of shaft 10, as shown in FIG. 2.

As soon as resetting slide 19 starts to be shifted, in the direction ofarrow 58, from its rest position, shown in FIG. 5, to its final zerosetting position, shown in FIGS. 3 and 4, the individual steppingpinions 44 are disengaged from the respective counting wheels 9 evenbefore zero setting fingers 23 come into contact with the respectiveheartshape resetting cams 8. This is due to the fact that shaft 30 forstepping pinions 44 which, in the rest position of resetting slide 19,occupies the position shown in FIG. 5 in which it is engaged against therear ends of slots 26 and 27 provided in the respective wall portions 24and 25, maintains this position owing to the frictional couplingeffected by bar springs 32. When slide 19 is shifted further in thedirection of arrow 58, stepping pinions 44 engage and are held againstrotation by elastic tongues 45, and shaft 30 is prevented from furthermotion and is overtaken by slide 19. By this relative movement betweenshaft 30 and slide 19, shaft 30 is displaced in slots 26 and 27 until itengages the front edges thereof. A small additional overstroke resultsin engaging zero setting fingers 23 completely against the base portionsof heart-shape cams 8, all of the elastic tongues 45 being at the sametime slightly deflected.

After releasing resetting slide 19, return springs 49 pull slide 19 backtoward its rest position. Again, owing to the action of the frictioncoupling, stepping pinions 44 re-engage the respective counting wheels 9at the What is claimed is:

1. In a zero setting roller counting mechanism of the type including acounter frame, a plurality of toothed counting wheels rotatably mountedon a common counting wheel shaft and each having a respectiveheart-shape resetting cam fixed thereto, the cams, for resetting of thecounting mechanism to zero, being actuable by respective zero settingfingers of a zero setting rake operable, against spring bias, by aresetting slide shiftable in the counter frame transversely of thecommon shaft of the counting wheels, and a plurality of counting wheelstepping pinions mounted on a common pinion shaft which is displaceableradially of the counting wheels, the stepping pinions, during zerosetting of the counting wheels, being disengaged from the countingwheels and held against rotation by arresting elements: the improvementcomprising, in combination, said resetting slide including a plateextending laterally through the axial length of the counting wheel set;said zero setting fingers being arranged in fixed positions on saidplate; and wall portions extending from the opposite longitudinal edgesof said plate and mounting said common pinion shaft in parallel relationto said common counting wheel shaft.

2. In a zero setting roller counting mechanism, the improvement claimedin claim 1, in which said plate is integral with said side wall portionsand said zero setting fingers.

3. In a zero setting roller counting mechanism, the improvement claimedin claim 2, in which said plate is formed of a synthetic material.

4. In a zero setting roller counting mechanism, the improvement claimedin claim 1, in which said common pinion shaft is mounted in longitudinalslots in said wall portions so as to be shiftable longitudinally of saidslots against the action of frictional forces produced by springpressure. I

5. ln a zero setting roller counting mechanism, the improvement claimedin claim 4, in which the frictional forces are produced by finger-typesprings secured on said wall portions and having free ends engaging theends of said common pinion shaft and pressing the ends of said commonpinion shaft against longitudinal surfaces of the respective slots.

6. In a zero setting roller counting mechanism, the improvement claimedin claim 1, in which said counter frame comprises a bottom and sidewalls extending upwardly from the opposite lateral edges of said bottom;each of said side walls being formed with an upwardly opening recess inits inner surface; said common pinion shaft being guided in saidrecesses.

7. In a zero setting roller counting mechanism, the improvement claimedin claim 1, including guide sleeves on said common counting wheel shaftat opposite endsof the counting wheel set; said wall portions havinghorizontally extending guiding edges engaging said guide sleeves.

8. In a zero setting roller counting mechanism, the improvement claimedin claim 1, in which said counter frame is made of synthetic materialand is formed integrally with said arresting elements for said steppingpinions.

9. In a zero setting roller counting mechanism, the improvement claimedin claim 1, in which said counter frame includes a bottom and side wallsextending upwardly from the lateral sides of said bottom; said sidewalls being formed with axially aligned bearing bores receiving saidcounting wheel shaft; the inner surfaces of said side walls being formedwith upwardly opening guiding recesses extending from the upper edges ofthe side walls to said bearing bores.

10. In a zero setting roller counting mechanism, the improvement claimedin claim 1, in which the outer surface of said plate is formed with anotch; and a stop element elastically secured to said counter frame andengageable in said notch to retain said resetting slide in its restposition.

1. In a zero setting roller counting mechanism of the type including acounter frame, a plurality of toothed counting wheels rotatably mountedon a common counting wheel shaft and each having a respectiveheart-shape resetting cam fixed thereto, the cams, for resetting of thecounting mechanism to zero, being actuable by respective zero settingfingers of a zero setting rake operable, against spring bias, by aresetting slide shiftable in the counter frame transversely of thecommon shaft of the counting wheels, and a plurality of counting wheelstepping pinions mounted on a common pinion shaft which is displaceableradially of the counting wheels, the stepping pinions, during zerosetting of the counting wheels, being disengaged from the countingwheels and held against rotation by arresting elements: the improvementcomprising, in combination, said resetting slide including a plateextending laterally through the axial length of the counting wheel set;said zero setting fingers being arranged in fixed positions on saidplate; and wall portions extending from the opposite longitudinal edgesof said plate and mounting said common pinion shaft in parallel relationto said common counting wheel shaft.
 2. In a zero setting rollercounting mechanism, the improvement claimed in claim 1, in which saidplate is integral with said side wall portions and said zero settingfingers.
 3. In a zero setting roller counting mechanism, the improvementclaimed in claim 2, in which said plate is formed of a syntheticmaterial.
 4. In a zero setting roller counting mechanism, theimprovement claimed in claim 1, in which said common pinion shaft ismounted in longitudinal slots in said wall portions so as to beshiftable longitudinally of said slots against the action of frictionalforces produced by spring pressure.
 5. In a zero setting roller countingmechanism, the improvement claimed in claim 4, in which the frictionalforces are produced by finger-type springs secured on said wall portionsand having free ends engaging the ends of said common pinion shaft andpressing the ends of said common pinion shaft against longitudinalsurfaces of the respective slots.
 6. In a zero setting roller countingmechanism, the improvement claimed in claim 1, in which said counterframe comprises a bottom and side walls extending upwardly from theopposite lateral edges of said bottom; each of said side walls beingformed with an upwardly opening recess in its inner surface; said commonpinion shaft being guided in said recesses.
 7. In a zero setting rollercounting mechanism, the improvement claimed in claim 1, including guidesleeves on said common counting wheel shaft at opposite ends of thecounting wheel set; said wall portions having horizontally extendingguiding edges engaging said guide sleeves.
 8. In a zero setting rollercounting mechanism, the improvement claimed in claim 1, in which saidcounter frame is made of synthetic material and is formed integrallywith said arreSting elements for said stepping pinions.
 9. In a zerosetting roller counting mechanism, the improvement claimed in claim 1,in which said counter frame includes a bottom and side walls extendingupwardly from the lateral sides of said bottom; said side walls beingformed with axially aligned bearing bores receiving said counting wheelshaft; the inner surfaces of said side walls being formed with upwardlyopening guiding recesses extending from the upper edges of the sidewalls to said bearing bores.
 10. In a zero setting roller countingmechanism, the improvement claimed in claim 1, in which the outersurface of said plate is formed with a notch; and a stop elementelastically secured to said counter frame and engageable in said notchto retain said resetting slide in its rest position.